Whoa, I just got a basic Python wrapper around ngtcp2 [server only] functional. Lots of error handling and edge cases need to be implemented.
The test that is working is a client (aioquic) connects, opens a stream, both sides send some data, and confirms that the other side received the data.
I really didn't think my last set of changes would make things work, I expected to hit some unimplemented parts.
TODO:
```
$ grep NotImplementedError ngtcp2.py | wc -l
15
```